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Finding the Fourth Proportional to 506.21, 758.51 and 488.39

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Solution

The fourth proportional to 506.21, 758.51 and 488.39 is: 731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.21 : 758.51 = 488.39 : x
  2. Step 2: Convert to fraction form
    506.21/758.51 = 488.39/x
  3. Step 3: Cross multiply
    506.21x = 758.51 × 488.39
  4. Step 4: Simplify right side
    506.21x = 370,446.26
  5. Step 5: Solve for x
    x = 370,446.26/506.21
  6. Step 6: Final answer
    x = 731.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.